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/* ====================================================================
* Copyright (c) 1998-2011 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* openssl-core@openssl.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com). */
#ifndef OPENSSL_HEADER_ARM_ARCH_H
#define OPENSSL_HEADER_ARM_ARCH_H
#if !defined(__ARM_ARCH__)
# if defined(__CC_ARM)
# define __ARM_ARCH__ __TARGET_ARCH_ARM
# if defined(__BIG_ENDIAN)
# define __ARMEB__
# else
# define __ARMEL__
# endif
# elif defined(__GNUC__)
# if defined(__aarch64__)
# define __ARM_ARCH__ 8
# if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
# define __ARMEB__
# else
# define __ARMEL__
# endif
// Why doesn't gcc define __ARM_ARCH__? Instead it defines
// bunch of below macros. See all_architectires[] table in
// gcc/config/arm/arm.c. On a side note it defines
// __ARMEL__/__ARMEB__ for little-/big-endian.
# elif defined(__ARM_ARCH)
# define __ARM_ARCH__ __ARM_ARCH
# elif defined(__ARM_ARCH_8A__)
# define __ARM_ARCH__ 8
# elif defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || \
defined(__ARM_ARCH_7R__)|| defined(__ARM_ARCH_7M__) || \
defined(__ARM_ARCH_7EM__)
# define __ARM_ARCH__ 7
# elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || \
defined(__ARM_ARCH_6K__)|| defined(__ARM_ARCH_6M__) || \
defined(__ARM_ARCH_6Z__)|| defined(__ARM_ARCH_6ZK__) || \
defined(__ARM_ARCH_6T2__)
# define __ARM_ARCH__ 6
# elif defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) || \
defined(__ARM_ARCH_5E__)|| defined(__ARM_ARCH_5TE__) || \
defined(__ARM_ARCH_5TEJ__)
# define __ARM_ARCH__ 5
# elif defined(__ARM_ARCH_4__) || defined(__ARM_ARCH_4T__)
# define __ARM_ARCH__ 4
# else
# error "unsupported ARM architecture"
# endif
# endif
#endif
// Even when building for 32-bit ARM, support for aarch64 crypto instructions
// will be included.
#define __ARM_MAX_ARCH__ 8
// ARMV7_NEON is true when a NEON unit is present in the current CPU.
#define ARMV7_NEON (1 << 0)
// ARMV8_AES indicates support for hardware AES instructions.
#define ARMV8_AES (1 << 2)
// ARMV8_SHA1 indicates support for hardware SHA-1 instructions.
#define ARMV8_SHA1 (1 << 3)
// ARMV8_SHA256 indicates support for hardware SHA-256 instructions.
#define ARMV8_SHA256 (1 << 4)
// ARMV8_PMULL indicates support for carryless multiplication.
#define ARMV8_PMULL (1 << 5)
#if defined(__ASSEMBLER__)
// Support macros for
// - Armv8.3-A Pointer Authentication and
// - Armv8.5-A Branch Target Identification
// features which require emitting a .note.gnu.property section with the
// appropriate architecture-dependent feature bits set.
// Read more: "ELF for the ArmĀ® 64-bit Architecture"
#if (__ARM_FEATURE_BTI_DEFAULT == 1)
#define GNU_PROPERTY_AARCH64_BTI (1 << 0) // Has Branch Target Identification
#define AARCH64_VALID_CALL_TARGET hint #34 // BTI 'c'
#else
#define GNU_PROPERTY_AARCH64_BTI 0 // No Branch Target Identification
#define AARCH64_VALID_CALL_TARGET
#endif
#if ((__ARM_FEATURE_PAC_DEFAULT & 1) == 1) // Signed with A-key
#define GNU_PROPERTY_AARCH64_POINTER_AUTH \
(1 << 1) // Has Pointer Authentication
#define AARCH64_SIGN_LINK_REGISTER hint #25 // PACIASP
#define AARCH64_VALIDATE_LINK_REGISTER hint #29 // AUTIASP
#elif ((__ARM_FEATURE_PAC_DEFAULT & 2) == 2) // Signed with B-key
#define GNU_PROPERTY_AARCH64_POINTER_AUTH \
(1 << 1) // Has Pointer Authentication
#define AARCH64_SIGN_LINK_REGISTER hint #27 // PACIBSP
#define AARCH64_VALIDATE_LINK_REGISTER hint #31 // AUTIBSP
#else
#define GNU_PROPERTY_AARCH64_POINTER_AUTH 0 // No Pointer Authentication
#if defined(__ARM_FEATURE_BTI_DEFAULT)
#define AARCH64_SIGN_LINK_REGISTER AARCH64_VALID_CALL_TARGET
#else
#define AARCH64_SIGN_LINK_REGISTER
#endif
#define AARCH64_VALIDATE_LINK_REGISTER
#endif
#if (GNU_PROPERTY_AARCH64_POINTER_AUTH != 0) || (GNU_PROPERTY_AARCH64_BTI != 0)
.pushsection note.gnu.property, "a";
.balign 8;
.long 4;
.long 0x10;
.long 0x5;
.asciz "GNU";
.long 0xc0000000; /* GNU_PROPERTY_AARCH64_FEATURE_1_AND */
.long 4;
.long (GNU_PROPERTY_AARCH64_POINTER_AUTH | GNU_PROPERTY_AARCH64_BTI);
.long 0
.popsection
#endif
#endif /* defined __ASSEMBLER__ */
#endif // OPENSSL_HEADER_ARM_ARCH_H